#content{
  overflow: hidden;
}
#ul{
  width: 1.5rem;
  height: 100%;
  background-color: rgb(246, 246, 246);
  display: flex;
  flex-direction: column;
  text-align: center;
  float: left;
}
#ul>div{
  flex-grow: 1;
  height: 1rem;
  line-height: 1rem;
  font-size: .3rem;
  border-bottom: 1px solid rgb(246, 246, 0);
  float: left;
}
#fenlei{
  position: fixed;
  top: 60px;
  right: 0;
  width: 4.5rem;
  height: 1rem;
  line-height: 1rem;
  /*background-color: red;*/
  border-bottom: 1px solid red;
  display: flex;
  overflow: hidden;
}
#fenlei>div{
  flex-grow: 1;
  font-size: .3rem;
  text-align: center;
  align-items: center;
}
#fenlei>div img{
  width: .3rem;
  height: .3rem;
}
#li1_1, #li2_1, #li3_1, #li4_1, #li5_1, #li6_1, #li7_1, #li8_1,#li9_1, #li10_1, #li11_1, #li12_1{
  /*position: absolute;
  top: 2.2rem;
  right: 0;*/
  margin-top: 1rem;
  height: 300px;
  width: 4.5rem;
  background-color: red;
  float: right;
}
